April Weather in Shelter Island, United States

Last updated: February 24, 2025

Discover the April weather on Shelter Island, where the transition into spring brings a delightful mix of temperatures and conditions. The maximum temperature reaches a pleasant 16°C (61°F), while the average settles at a refreshing 8°C (47°F), dipping to a cool 0°C (33°F) at night. This month experiences a total precipitation of 137 mm (5.4 in) over 12 rainy days, contributing to a lofty humidity level of 79%. Embrace the unique blend of cool breezes and occasional showers as Shelter Island awakens to the vibrant hues of spring.

April Temperature in Shelter Island

As April unfolds on Shelter Island, temperatures begin to embrace the warmth of spring after a long winter. The month starts with a gentle minimum of 0°C (33°F), rising to a pleasant average of 8°C (47°F). By the end of the month, daytime highs can reach up to 16°C (61°F), offering a delightful transition from the cooler, brisk days of early spring. This increasing warmth is a clear trend from the preceding months, where the temperatures were consistently low, with January chilling at a minimum of -13°C (8°F). The noticeable rise in temperature not only invites locals and visitors outdoors but also heralds the vibrant blossoms and rejuvenation of nature that characterize Shelter Island’s charming ambiance in April.

April Weather in Shelter Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Shelter Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363739465464727368615042
Data source: Temperature data for Shelter Island generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Shelter Island

In April, Shelter Island experiences a notable increase in precipitation, with 137 mm (5.4 in) of rain recorded over 12 days. This uptick marks a continuation of a wetter trend from the previous months, following 113 mm in March and 123 mm in February. April stands out as the wettest month so far this year, paving the way for lush spring growth. This pattern contrasts with the drier months ahead, such as June, which averages only 72 mm (2.9 in), emphasizing April's role in replenishing the island's water resources as it transitions into the warmer seasons. The frequent rain showers not only nourish the landscape but also signify the arrival of spring, full of vitality and renewal.

April Precipitation Trends in Shelter Island

The chart displays monthly precipitation patterns in Shelter Island, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec89123113137129729910399161113147
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Shelter Island

In April, Shelter Island experiences a slight dip in humidity, boasting an average of 79%, which marks a gradual decrease from the preceding months. Following a winter characterized by relatively high humidity levels of 84% in January and February, as well as 82% in March, April transitions into spring with a refreshing change. This trend continues as the humidity further lowers in May to 75%, suggesting a trend towards drier conditions as the warmer months approach. The fluctuations in humidity not only highlight the shift in seasons but also set the stage for the more comfortable, breezy days of summer ahead.

April Average Humidity in Shelter Island

This chart illustrates the average monthly humidity levels in Shelter Island, with April's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how April's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Shelter Island

As April arrives in Shelter Island, the UV Index climbs significantly to 8, signaling very high exposure levels and a reduced burn time of just 15 minutes. This increase marks a noticeable shift from the earlier months, where UV levels were mostly moderate to high, culminating in March’s UV Index of 6. With the onset of spring, residents and visitors should take extra precautions to protect their skin from harmful UV rays, setting the stage for an intensifying sun as summer approaches. The trend continues into May, where the UV Index peaks at 9, highlighting the importance of sun safety during this vibrant time of year. Stay informed about UV conditions by checking the Shelter Island UV Index for the latest updates.

Maximum UV Index Levels in Shelter Island for April

The chart shows the monthly maximum UV Index (UVI) for Shelter Island in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098642
Data source: Shelter Island April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

April Sunshine in Shelter Island

As spring unfolds in Shelter Island, April brings a delightful blend of warmth and light, totaling 250 hours of sunshine. This marks a slight dip from March's impressive 261 hours, yet it remains significantly brighter than the winter months, where sunshine barely broke 185 hours in February. As the days lengthen and temperatures rise, the increasing trend of sun-drenched days continues, setting the stage for May's peak of 291 hours. The progression from January's chilly 153 hours to the vibrant blooms of April highlights not just a shift in weather, but a metaphorical awakening of the island, inviting residents and visitors alike to bask in the beauty of the sunny sea.

Monthly Sunshine Duration in Shelter Island: April Highlighted

The April sunshine duration represents the total number of hours Shelter Island experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec153h185h261h250h291h321h349h327h281h229h208h177h
Data source: Shelter Island April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Shelter Island During April

In Shelter Island, the likelihood of sunny weather in April stands at a moderate 49%, mirroring the uncertainties seen in January and September. This month follows a notably sunny March with a 59% chance of sunshine, indicating a potential continuation of brighter days. However, as the seasons shift towards summer, May presents a slight dip to 45%, suggesting that the warmth of summer may bring variable skies ahead. Overall, April offers a balanced blend of sunshine opportunities, inviting residents and visitors alike to enjoy the fleeting beauty of spring while keeping an eye on the ever-changing forecast.

Percentage of Sunny Days in April in Shelter Island

The chart illustrates the percentage of sunny days in Shelter Island throughout the year, with April highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Shelter Island experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%31%59%49%46%41%45%35%49%46%53%32%
Data source: Shelter Island April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Shelter Island in April

As April unfolds in Shelter Island, the lengthening days become a hallmark of spring, with daylight extending to 13 hours. This marks a significant increase from the 11 hours seen in March, signaling a transition into warmer months. The progression from winter to spring is striking, as the daylight gradually amplifies from 9 hours in January to 14 hours by May, encapsulating the essence of renewal and growth. This upward trend continues into June, peaking at 15 hours, before beginning its slow descent in the following months. As the days grow longer, residents bask in the sun's warmth, embracing outdoor activities and the vibrant colors of blooming nature. April’s generous daylight not only brightens the landscape but also rejuvenates the spirit, setting the stage for the unfolding beauty of summer.

Average Daylight Hours in Shelter Island for April

The chart illustrates the variation in daylight duration in Shelter Island throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 35m10h 38m11h 58m13h 20m14h 29m15h 3m14h 44m13h 43m12h 24m11h 3m9h 52m9h 15m
Data source: Shelter Island daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Shelter Island

As April arrives on Shelter Island, the average wind speed settles at a gentle 6.2 m/s (14 mph), slightly lower than the previous months. This decrease follows a gradual decline from January and February’s brisk 7.3 m/s (16 mph), suggesting that while winter’s robust winds are waning, a mild spring breeze is taking hold. Each month this spring has seen a trend towards calmer winds, with May expected to dip even further to 6.0 m/s (14 mph). This shift not only marks a transition into warmer weather but also creates an inviting atmosphere for exploring the island's natural beauty, where the whisper of the April winds beckons visitors to enjoy outdoor adventures amidst the blossoming scenery.

Average April Wind Speed in Shelter Island

The chart displays monthly wind speed patterns in Shelter Island, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec7.37.36.96.2 m/s6.05.64.84.96.16.76.86.6
Data source: Shelter Island April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Shelter Island Compares to Other Months

The weather in Shelter Island changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Shelter Island and find detailed weather information for every month.

April and January present quite contrasting weather conditions. In January, temperatures can plunge as low as -13°C (8°F), with an average of just 2°C (37°F) and a maximum of 13°C (56°F). The month typically sees around 89 mm (3.5 in) of precipitation over 9 days, accompanied by higher humidity levels at 84%. In comparison, April showcases a milder climate, with minimum temperatures around 0°C (33°F), an average of 8°C (47°F), and a peak of 16°C (61°F). Despite being generally warmer, April also boasts higher precipitation at 137 mm (5.4 in) spread across 12 days and a humidity level of 79%. For more detailed insights, you can explore the Shelter Island weather in January.

When comparing the weather in April and February, April generally presents milder conditions. In April, temperatures range from a minimum of 0°C (33°F) to a maximum of 16°C (61°F), with an average of 8°C (47°F). In contrast, February tends to be colder, with temperatures ranging from -12°C (11°F) to 12°C (53°F) and an average temperature of 3°C (37°F). Precipitation is slightly higher in April at 137 mm (5.4 in) over 12 days, compared to February's 123 mm (4.8 in) over 11 days. Additionally, April's humidity at 79% is slightly lower than February's 84%, suggesting that while April is wetter, it also feels a bit less humid. For more details on February weather, you can check Shelter Island weather in February.

In comparing the weather of April and March, we see a noticeable warming trend. April experiences a minimum temperature of 0°C (33°F) and an average of 8°C (47°F), which is an improvement from March’s colder minimum of -7°C (20°F) and average of 4°C (39°F). Additionally, while both months have similar maximum temperatures, with April reaching up to 16°C (61°F) and March at 15°C (59°F), April also sees an increase in precipitation, amounting to 137 mm (5.4 in) over 12 days compared to March’s 113 mm (4.5 in) over 10 days. Humidity levels are slightly lower in April at 79%, contrasted with March's 82%. For a closer look at the weather specifics, you can explore Shelter Island weather in March.

April and May exhibit notable differences in weather patterns. April experiences cooler temperatures, with a minimum of 0°C (33°F) and an average of 8°C (47°F), while May sees a rise, with minimums of 4°C (39°F) and an average of 12°C (54°F). Precipitation levels are relatively similar, with April receiving 137 mm (5.4 in) over 12 days and May slightly less at 129 mm (5.1 in) over 13 days. Humidity levels also show a slight decrease from April’s 79% to May’s 75%, making May feel a bit drier and warmer overall. For more details, you can check out Shelter Island weather in May.

In April, temperatures are quite cool, ranging from a minimum of 0°C (33°F) to a maximum of 16°C (61°F), with an average of 8°C (47°F). Additionally, this month experiences significant precipitation, totaling 137 mm (5.4 in) over about 12 days, coupled with a relatively high humidity level of 79%. In contrast, June brings warmer weather, with temperatures starting at a minimum of 11°C (52°F) and peaking at 24°C (75°F), leading to a comfortable average of 18°C (64°F). Rainfall decreases considerably to 72 mm (2.9 in) over just 8 days, while humidity remains similar at 78%. For more detailed information, you can visit Shelter Island weather in June.

In comparing the weather of April and July, it's clear that July is significantly warmer, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 28°C (82°F). In contrast, April's temperatures are much cooler, with averages spanning from 0°C (33°F) to 16°C (61°F). Additionally, April experiences higher precipitation levels at 137 mm (5.4 in) over 12 days, while July sees less rain at 99 mm (3.9 in) across just 10 days. Humidity levels are relatively similar, with April at 79% and July slightly lower at 76%. For a more detailed look at the weather in July, you can check out Shelter Island weather in July.

April and August exhibit stark contrasts in weather conditions. In April, temperatures range from a frosty 0°C (33°F) to a mild maximum of 16°C (61°F), with an average of 8°C (47°F). The month is marked by higher precipitation, with 137 mm (5.4 in) spread over 12 days and humidity levels reaching 79%. In contrast, August offers a much warmer climate, with temperatures ranging from 17°C (63°F) to a peak of 27°C (80°F) and averaging around 23°C (73°F). Precipitation decreases to 103 mm (4.0 in) over just 9 days, accompanied by slightly lower humidity at 76%. For more detailed insights, check out this link: Shelter Island weather in August.

When comparing the weather in April and September, it's clear that September offers a milder and more comfortable climate. In April, temperatures range from a chilly minimum of 0°C (33°F) to a maximum of 16°C (61°F), with an average of just 8°C (47°F). This month also sees a higher level of precipitation at 137 mm (5.4 in) over about 12 days and a humidity level of 79%. In contrast, September enjoys warmer conditions with minimum temperatures of 12°C (55°F) and maximums reaching 26°C (79°F), averaging around 20°C (69°F). Precipitation decreases to 99 mm (3.9 in) over 10 days, and humidity is slightly lower at 75%. For more details on September weather, visit Shelter Island weather in September.

April and October present contrasting yet mild weather patterns. In April, temperatures typically range from a chilly 0°C (33°F) at night to a comfortable 16°C (61°F) during the day, with an average temperature of 8°C (47°F). The month tends to be quite wet, receiving around 137 mm (5.4 in) of rain over 12 days and carrying a higher humidity level of 79%. In comparison, October showcases warmer temperatures, with nighttime lows of 5°C (42°F) and daytime highs reaching up to 24°C (75°F), averaging around 16°C (61°F). Despite October's increased precipitation of 160 mm (6.3 in) across 14 days, the humidity is slightly lower at 75%. For more details on specific weather patterns, you can explore Shelter Island weather in October.

April and November present a striking contrast in weather, despite both being transitional months. In April, temperatures range from a chilly 0°C (33°F) at their minimum to a milder maximum of 16°C (61°F), with an average of 8°C (47°F). April often brings considerable rainfall, averaging 137 mm (5.4 in) over 12 days, accompanied by humidity levels around 79%.

Conversely, November features a cooler temperature range, with minimums dipping to -5°C (24°F) but peaking at a comfortable 19°C (67°F) and averaging 10°C (50°F). Although it experiences slightly less precipitation—113 mm (4.4 in) across 10 days—humidity remains high at 80%. For a more detailed look at November weather, check out Shelter Island weather in November.

April and December present contrasting weather patterns. In April, temperatures range from a chilly 0°C (33°F) to a more moderate 16°C (61°F), with an average of 8°C (47°F). The month experiences considerable precipitation, totaling 137 mm (5.4 in) across 12 days, alongside a humidity level of 79%. In contrast, December is colder, with temperatures dropping as low as -9°C (16°F) but averaging 5°C (42°F). Although the maximum temperature can still reach 16°C (61°F), the month sees slightly more precipitation at 147 mm (5.8 in) over the same number of days, and the humidity remains similar at 80%. For a closer look at what to expect, check out Shelter Island weather in December.

Compare Shelter Island's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Shelter Island

As April arrives on Shelter Island, the weather begins to shift, bringing a mix of mild temperatures and a noticeable rise in humidity. Unlike the chill of winter months, April boasts pleasant days that beckon for outdoor exploration, though it often introduces a new rhythm with frequent rain showers—averaging about 12 days of precipitation throughout the month. This transition creates a refreshing atmosphere, yet the soft spring breezes are still tempered by the cool air, resulting in an exhilarating yet unpredictable climate. To learn more about this fascinating weather pattern and how it compares to other months, check out Shelter Island Climate.